Add support for ReST admonitions (BB-10072)
Restructured text allows to define special paragraphs like notes, warnings, etc. that will stand out from the surrounding text. They call these admonitions. For example:
.. note:: This paragraph should stand out from the surrounding text. .. warning:: This paragraph should stand out too.
Currently, the generated HTML does surround the note in a
<div> with the appropriate class, but it shows up as normal text.